9. Schaltgerät - Kessel

8. Malfunctions and troubleshootingStörung Ursache Abhilfemaßnahme5 System suddenlyruns loudly6 Putrid smellAcrid smell7 System runs too often, switcheson for no reason8 System does not switch orhas a variety of differentswitching malfunctionsInlet gate to the system (if existent) notopened or not opened completelyWastewater temperature too highover a longer period (15 min), leadingto restricted suction capacityof the systemPhases switched through work onthe domestic power supplyDamage to the pump parts throughobjectsObject in the pumpLeaks in the lifting stationPump not airtightMotor(s) too hot, overloadedContactors too hot on account ofswitching malfunctionsSupply quantity too high throughexternal water or similarBackwater flap faulty, wastewaterruns out of the pressure pipe backinto the systemFoam formation in the systemTank or pumps are blocked bygrease being discharged in largequantitiesLevel control ventilation blockedOpen inlet gate completelyReduce wastewater temperaturechecking the direction of rotationCheck pump, have it repaired or replaced byCustomer Services if necessaryRemove the object, check pump for damageand replace if necessaryCheck ventilation, inlet and pressure lines aswell as covers for air-tightness and eliminateleaksCheck pump, have it repaired or replaced byCustomer Services if necessaryCheck motor and pump to make sure they arerunning easily, check system for switching malfunctions(particularly motor protection switch)System switched on and off too often on accountof high inlet quantities, clarification withKESSEL customer servicesCheck system for switching malfunctions.Find and eliminate the causesCheck backwater flap (integrated in the pressureoutlet connecting piece on every pump),clean it and replace any damaged partsReduce amounts of washing powder and detergentsusedClean the whole system, check greasedischargeCheck cables between the switch unit and levelcontrol for kinks and correct routing (even gradient),correct or replace if necessary9 Pumping capacity too lowLevel control soiled; level pressureswitch set incorrectly or faultyRotary field incorrectWrong direction of pump rotationRemove the level control, clean submersiblepipe, check pressure switch and adjust if necessarySwap mains wires (malfunction message at theswitch unit)Check pump wires for correct connection67